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Currently, most gallium nitride based light emitting diodes (LEDs) are fabricated with polar c-plane [0001] direction. This orientation of gallium nitride has a large polarization electric field. Therefore, the device performance is adversely affected by strain induced piezoelectric polarization. The strain affects crystalline quality as well as optical and electrical properties of LED epitaxial film...
The prior distribution information of the factor is usually available, but it is ignored by the standard optimal design. For the sake of considering the distribution information of the factors in an optimal experimental design, the following works are done: Firstly, the least expected squares estimator (abbreviated as ELSE), which can consider the distribution information of the factors, is defined...
Meta-models are widely used to facilitate the analysis and optimization of engineering systems that involve computationally expensive simulations. Kriging is widely used as a meta-modeling technique to build surrogate models. However, the assumption of a stationary covariance structure underlying Kriging does not hold in situations where the level of smoothness of a response varies significantly....
Multi-physics multi-scale modeling issues in various stages of the LED manufacturing, 3D-SiP, and nano interconnects have been discussed. Molecular dynamics (MD) and finite element method (FEM) have been used to study the scale effect of the material properties and the prediction of the module behaviors which are critical to LED fabrication. We propose a new concept to integrate multi-physics/multi-scale...
The NTRU algorithm is a public key system based on ring, its appearance opened up a new field of application and research for the public key system. In this paper, we present a new method to enhance the executive speed of NTRU algorithm. First, we analyze the polynomial coefficients to find out the distribution characteristics of patterns,such as "11", "101" and so on, which are...
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